It plays a lot like Diablo II, but with flashier visual effects. Unfortunately, you need a fast, steady internet connection. I'm restricted to a satellite connection where I live and it is nearly unplayable with the long latency period. Shoot monster - wait 1100 msec for bolt to fire - meanwhile monsters are not waiting. So if you are limited to HughesNet, don't bother, it is way too frustrating.
I bought Torchlight and am having a blast - it may actually be more Diablo than Diablo III.
Ke nu'jurkadir sha Mando'ade